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dc.contributor.advisorFahlman, Andreas
dc.contributor.advisorMozzachiodi, Riccardo
dc.contributor.authorEpple, Alexandra L.
dc.date.accessioned2017-05-31T21:43:46Z
dc.date.available2017-05-31T21:43:46Z
dc.date.issued2016-08
dc.identifier.urihttp://hdl.handle.net/1969.6/1165
dc.descriptionA thesis Submitted in Partial Fulfillment of the Requirements for the Degree of MASTER of SCIENCE in MARINE BIOLOGY from Texas A&M University-Corpus Christi in Corpus Christi, Texas.en_US
dc.description.abstractThough cetaceans withstand long periods of apnea and exhibit short respiratory exchange periods, many of the fundamental physiological mechanisms underlying cetacean respiration are unknown. This study examined respiratory durations, volumes and flow rates in nine belugas (Delphinapterus leucas) housed in managed care facilities using custom designed pulmonary function equipment. Large differences were observed among the animals, including vastly different tidal volumes (7.5 20.7 L) and vital capacities (29.8 93.0 L). Measurements of vital capacity may have been affected by behavioral compliance with requested maximal effort cues, but may also have allowed for measurement of larger ranges past those obtainable without training. Animals exhibited high flow rates with a maximal recorded flow rate of 371 L∙sec–1; slower and less variable inspiratory flows indicate a potential physiological flow limitation not exhibited during expiration. Tidal volumes were much larger than those predicted based on respiratory scaling equations and were 43 % of the vital capacity. Though previous research suggests that cetaceans may be capable of exchanging 80-90 % of their total lung capacity, these animals were not regularly doing so. These findings expand upon data previously collected in other species by establishing novel data on respiratory variables in belugas. Development of a healthy baseline could allow for non-invasive investigation into beluga respiratory health.en_US
dc.format.extent50 pages.en_US
dc.language.isoen_USen_US
dc.rightsThis material is made available for use in research, teaching, and private study, pursuant to U.S. Copyright law. The user assumes full responsibility for any use of the materials, including but not limited to, infringement of copyright and publication rights of reproduced materials. Any materials used should be fully credited with its source. All rights are reserved and retained regardless of current or future development or laws that may apply to fair use standards. Permission for publication of this material, in part or in full, must be secured with the author and/or publisher.en_US
dc.subjectbelugaen_US
dc.subjectcetaceanen_US
dc.subjectmarine mammalen_US
dc.subjectpulmonary function testingen_US
dc.subjectrespiratory physiologyen_US
dc.subjectventilationen_US
dc.titleRespiratory physiology of belugas (Delphinapterus leucas)en_US
dc.typeTexten_US
dc.rights.holderEpple, Alexandra L.
thesis.degree.disciplineMarine Biologyen_US
thesis.degree.grantorTexas A & M University--Corpus Christien_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
dc.contributor.committeeMemberBird, Christopher E.
dc.description.departmentLife Sciencesen_US
dc.description.collegeCollege of Science and Engineeringen_US
dc.type.genreThesisen_US


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